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@@ -1,1314 +1,1335 b'' | |||
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1 | 1 | # merge.py - directory-level update/merge handling for Mercurial |
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2 | 2 | # |
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3 | 3 | # Copyright 2006, 2007 Matt Mackall <mpm@selenic.com> |
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4 | 4 | # |
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5 | 5 | # This software may be used and distributed according to the terms of the |
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6 | 6 | # GNU General Public License version 2 or any later version. |
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7 | 7 | |
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8 | 8 | from __future__ import absolute_import |
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9 | 9 | |
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10 | 10 | import errno |
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11 | 11 | import os |
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12 | 12 | import shutil |
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13 | 13 | import struct |
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14 | 14 | |
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15 | 15 | from .i18n import _ |
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16 | 16 | from .node import ( |
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17 | 17 | bin, |
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18 | 18 | hex, |
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19 | 19 | nullid, |
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20 | 20 | nullrev, |
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21 | 21 | ) |
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22 | 22 | from . import ( |
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23 | 23 | copies, |
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24 | 24 | destutil, |
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25 | 25 | error, |
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26 | 26 | filemerge, |
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27 | 27 | obsolete, |
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28 | 28 | subrepo, |
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29 | 29 | util, |
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30 | 30 | worker, |
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31 | 31 | ) |
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32 | 32 | |
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33 | 33 | _pack = struct.pack |
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34 | 34 | _unpack = struct.unpack |
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35 | 35 | |
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36 | 36 | def _droponode(data): |
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37 | 37 | # used for compatibility for v1 |
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38 | 38 | bits = data.split('\0') |
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39 | 39 | bits = bits[:-2] + bits[-1:] |
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40 | 40 | return '\0'.join(bits) |
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41 | 41 | |
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42 | 42 | class mergestate(object): |
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43 | 43 | '''track 3-way merge state of individual files |
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44 | 44 | |
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45 | 45 | it is stored on disk when needed. Two file are used, one with an old |
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46 | 46 | format, one with a new format. Both contains similar data, but the new |
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47 | 47 | format can store new kinds of field. |
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48 | 48 | |
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49 | 49 | Current new format is a list of arbitrary record of the form: |
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50 | 50 | |
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51 | 51 | [type][length][content] |
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52 | 52 | |
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53 | 53 | Type is a single character, length is a 4 bytes integer, content is an |
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54 | 54 | arbitrary suites of bytes of length `length`. |
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55 | 55 | |
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56 | 56 | Type should be a letter. Capital letter are mandatory record, Mercurial |
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57 | 57 | should abort if they are unknown. lower case record can be safely ignored. |
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58 | 58 | |
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59 | 59 | Currently known record: |
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60 | 60 | |
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61 | 61 | L: the node of the "local" part of the merge (hexified version) |
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62 | 62 | O: the node of the "other" part of the merge (hexified version) |
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63 | 63 | F: a file to be merged entry |
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64 | 64 | D: a file that the external merge driver will merge internally |
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65 | 65 | (experimental) |
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66 | 66 | m: the external merge driver defined for this merge plus its run state |
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67 | 67 | (experimental) |
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68 | 68 | |
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69 | 69 | Merge driver run states (experimental): |
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70 | 70 | u: driver-resolved files unmarked -- needs to be run next time we're about |
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71 | 71 | to resolve or commit |
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72 | 72 | m: driver-resolved files marked -- only needs to be run before commit |
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73 | 73 | s: success/skipped -- does not need to be run any more |
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74 | 74 | ''' |
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75 | 75 | statepathv1 = 'merge/state' |
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76 | 76 | statepathv2 = 'merge/state2' |
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77 | 77 | |
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78 | 78 | def __init__(self, repo): |
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79 | 79 | self._repo = repo |
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80 | 80 | self._dirty = False |
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81 | 81 | self._read() |
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82 | 82 | |
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83 | 83 | def reset(self, node=None, other=None): |
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84 | 84 | self._state = {} |
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85 | 85 | self._local = None |
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86 | 86 | self._other = None |
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87 | 87 | if 'otherctx' in vars(self): |
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88 | 88 | del self.otherctx |
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89 | 89 | if node: |
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90 | 90 | self._local = node |
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91 | 91 | self._other = other |
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92 | 92 | self._readmergedriver = None |
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93 | 93 | if self.mergedriver: |
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94 | 94 | self._mdstate = 's' |
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95 | 95 | else: |
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96 | 96 | self._mdstate = 'u' |
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97 | 97 | shutil.rmtree(self._repo.join('merge'), True) |
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98 | 98 | self._dirty = False |
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99 | 99 | |
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100 | 100 | def _read(self): |
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101 | 101 | """Analyse each record content to restore a serialized state from disk |
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102 | 102 | |
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103 | 103 | This function process "record" entry produced by the de-serialization |
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104 | 104 | of on disk file. |
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105 | 105 | """ |
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106 | 106 | self._state = {} |
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107 | 107 | self._local = None |
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108 | 108 | self._other = None |
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109 | 109 | if 'otherctx' in vars(self): |
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110 | 110 | del self.otherctx |
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111 | 111 | self._readmergedriver = None |
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112 | 112 | self._mdstate = 's' |
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113 | 113 | records = self._readrecords() |
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114 | 114 | for rtype, record in records: |
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115 | 115 | if rtype == 'L': |
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116 | 116 | self._local = bin(record) |
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117 | 117 | elif rtype == 'O': |
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118 | 118 | self._other = bin(record) |
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119 | 119 | elif rtype == 'm': |
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120 | 120 | bits = record.split('\0', 1) |
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121 | 121 | mdstate = bits[1] |
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122 | 122 | if len(mdstate) != 1 or mdstate not in 'ums': |
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123 | 123 | # the merge driver should be idempotent, so just rerun it |
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124 | 124 | mdstate = 'u' |
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125 | 125 | |
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126 | 126 | self._readmergedriver = bits[0] |
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127 | 127 | self._mdstate = mdstate |
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128 | 128 | elif rtype in 'FD': |
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129 | 129 | bits = record.split('\0') |
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130 | 130 | self._state[bits[0]] = bits[1:] |
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131 | 131 | elif not rtype.islower(): |
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132 | 132 | raise error.Abort(_('unsupported merge state record: %s') |
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133 | 133 | % rtype) |
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134 | 134 | self._dirty = False |
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135 | 135 | |
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136 | 136 | def _readrecords(self): |
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137 | 137 | """Read merge state from disk and return a list of record (TYPE, data) |
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138 | 138 | |
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139 | 139 | We read data from both v1 and v2 files and decide which one to use. |
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140 | 140 | |
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141 | 141 | V1 has been used by version prior to 2.9.1 and contains less data than |
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142 | 142 | v2. We read both versions and check if no data in v2 contradicts |
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143 | 143 | v1. If there is not contradiction we can safely assume that both v1 |
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144 | 144 | and v2 were written at the same time and use the extract data in v2. If |
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145 | 145 | there is contradiction we ignore v2 content as we assume an old version |
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146 | 146 | of Mercurial has overwritten the mergestate file and left an old v2 |
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147 | 147 | file around. |
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148 | 148 | |
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149 | 149 | returns list of record [(TYPE, data), ...]""" |
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150 | 150 | v1records = self._readrecordsv1() |
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151 | 151 | v2records = self._readrecordsv2() |
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152 | 152 | if self._v1v2match(v1records, v2records): |
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153 | 153 | return v2records |
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154 | 154 | else: |
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155 | 155 | # v1 file is newer than v2 file, use it |
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156 | 156 | # we have to infer the "other" changeset of the merge |
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157 | 157 | # we cannot do better than that with v1 of the format |
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158 | 158 | mctx = self._repo[None].parents()[-1] |
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159 | 159 | v1records.append(('O', mctx.hex())) |
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160 | 160 | # add place holder "other" file node information |
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161 | 161 | # nobody is using it yet so we do no need to fetch the data |
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162 | 162 | # if mctx was wrong `mctx[bits[-2]]` may fails. |
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163 | 163 | for idx, r in enumerate(v1records): |
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164 | 164 | if r[0] == 'F': |
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165 | 165 | bits = r[1].split('\0') |
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166 | 166 | bits.insert(-2, '') |
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167 | 167 | v1records[idx] = (r[0], '\0'.join(bits)) |
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168 | 168 | return v1records |
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169 | 169 | |
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170 | 170 | def _v1v2match(self, v1records, v2records): |
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171 | 171 | oldv2 = set() # old format version of v2 record |
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172 | 172 | for rec in v2records: |
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173 | 173 | if rec[0] == 'L': |
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174 | 174 | oldv2.add(rec) |
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175 | 175 | elif rec[0] == 'F': |
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176 | 176 | # drop the onode data (not contained in v1) |
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177 | 177 | oldv2.add(('F', _droponode(rec[1]))) |
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178 | 178 | for rec in v1records: |
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179 | 179 | if rec not in oldv2: |
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180 | 180 | return False |
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181 | 181 | else: |
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182 | 182 | return True |
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183 | 183 | |
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184 | 184 | def _readrecordsv1(self): |
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185 | 185 | """read on disk merge state for version 1 file |
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186 | 186 | |
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187 | 187 | returns list of record [(TYPE, data), ...] |
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188 | 188 | |
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189 | 189 | Note: the "F" data from this file are one entry short |
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190 | 190 | (no "other file node" entry) |
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191 | 191 | """ |
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192 | 192 | records = [] |
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193 | 193 | try: |
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194 | 194 | f = self._repo.vfs(self.statepathv1) |
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195 | 195 | for i, l in enumerate(f): |
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196 | 196 | if i == 0: |
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197 | 197 | records.append(('L', l[:-1])) |
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198 | 198 | else: |
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199 | 199 | records.append(('F', l[:-1])) |
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200 | 200 | f.close() |
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201 | 201 | except IOError as err: |
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202 | 202 | if err.errno != errno.ENOENT: |
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203 | 203 | raise |
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204 | 204 | return records |
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205 | 205 | |
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206 | 206 | def _readrecordsv2(self): |
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207 | 207 | """read on disk merge state for version 2 file |
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208 | 208 | |
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209 | 209 | returns list of record [(TYPE, data), ...] |
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210 | 210 | """ |
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211 | 211 | records = [] |
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212 | 212 | try: |
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213 | 213 | f = self._repo.vfs(self.statepathv2) |
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214 | 214 | data = f.read() |
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215 | 215 | off = 0 |
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216 | 216 | end = len(data) |
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217 | 217 | while off < end: |
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218 | 218 | rtype = data[off] |
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219 | 219 | off += 1 |
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220 | 220 | length = _unpack('>I', data[off:(off + 4)])[0] |
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221 | 221 | off += 4 |
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222 | 222 | record = data[off:(off + length)] |
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223 | 223 | off += length |
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224 | 224 | records.append((rtype, record)) |
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225 | 225 | f.close() |
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226 | 226 | except IOError as err: |
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227 | 227 | if err.errno != errno.ENOENT: |
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228 | 228 | raise |
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229 | 229 | return records |
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230 | 230 | |
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231 | 231 | @util.propertycache |
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232 | 232 | def mergedriver(self): |
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233 | 233 | # protect against the following: |
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234 | 234 | # - A configures a malicious merge driver in their hgrc, then |
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235 | 235 | # pauses the merge |
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236 | 236 | # - A edits their hgrc to remove references to the merge driver |
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237 | 237 | # - A gives a copy of their entire repo, including .hg, to B |
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238 | 238 | # - B inspects .hgrc and finds it to be clean |
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239 | 239 | # - B then continues the merge and the malicious merge driver |
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240 | 240 | # gets invoked |
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241 | 241 | configmergedriver = self._repo.ui.config('experimental', 'mergedriver') |
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242 | 242 | if (self._readmergedriver is not None |
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243 | 243 | and self._readmergedriver != configmergedriver): |
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244 | 244 | raise error.ConfigError( |
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245 | 245 | _("merge driver changed since merge started"), |
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246 | 246 | hint=_("revert merge driver change or abort merge")) |
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247 | 247 | |
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248 | 248 | return configmergedriver |
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249 | 249 | |
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250 | 250 | @util.propertycache |
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251 | 251 | def otherctx(self): |
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252 | 252 | return self._repo[self._other] |
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253 | 253 | |
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254 | 254 | def active(self): |
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255 | 255 | """Whether mergestate is active. |
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256 | 256 | |
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257 | 257 | Returns True if there appears to be mergestate. This is a rough proxy |
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258 | 258 | for "is a merge in progress." |
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259 | 259 | """ |
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260 | 260 | # Check local variables before looking at filesystem for performance |
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261 | 261 | # reasons. |
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262 | 262 | return bool(self._local) or bool(self._state) or \ |
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263 | 263 | self._repo.vfs.exists(self.statepathv1) or \ |
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264 | 264 | self._repo.vfs.exists(self.statepathv2) |
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265 | 265 | |
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266 | 266 | def commit(self): |
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267 | 267 | """Write current state on disk (if necessary)""" |
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268 | 268 | if self._dirty: |
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269 | 269 | records = [] |
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270 | 270 | records.append(('L', hex(self._local))) |
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271 | 271 | records.append(('O', hex(self._other))) |
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272 | 272 | if self.mergedriver: |
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273 | 273 | records.append(('m', '\0'.join([ |
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274 | 274 | self.mergedriver, self._mdstate]))) |
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275 | 275 | for d, v in self._state.iteritems(): |
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276 | 276 | if v[0] == 'd': |
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277 | 277 | records.append(('D', '\0'.join([d] + v))) |
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278 | 278 | else: |
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279 | 279 | records.append(('F', '\0'.join([d] + v))) |
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280 | 280 | self._writerecords(records) |
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281 | 281 | self._dirty = False |
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282 | 282 | |
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283 | 283 | def _writerecords(self, records): |
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284 | 284 | """Write current state on disk (both v1 and v2)""" |
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285 | 285 | self._writerecordsv1(records) |
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286 | 286 | self._writerecordsv2(records) |
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287 | 287 | |
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288 | 288 | def _writerecordsv1(self, records): |
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289 | 289 | """Write current state on disk in a version 1 file""" |
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290 | 290 | f = self._repo.vfs(self.statepathv1, 'w') |
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291 | 291 | irecords = iter(records) |
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292 | 292 | lrecords = irecords.next() |
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293 | 293 | assert lrecords[0] == 'L' |
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294 | 294 | f.write(hex(self._local) + '\n') |
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295 | 295 | for rtype, data in irecords: |
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296 | 296 | if rtype == 'F': |
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297 | 297 | f.write('%s\n' % _droponode(data)) |
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298 | 298 | f.close() |
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299 | 299 | |
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300 | 300 | def _writerecordsv2(self, records): |
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301 | 301 | """Write current state on disk in a version 2 file""" |
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302 | 302 | f = self._repo.vfs(self.statepathv2, 'w') |
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303 | 303 | for key, data in records: |
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304 | 304 | assert len(key) == 1 |
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305 | 305 | format = '>sI%is' % len(data) |
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306 | 306 | f.write(_pack(format, key, len(data), data)) |
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307 | 307 | f.close() |
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308 | 308 | |
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309 | 309 | def add(self, fcl, fco, fca, fd): |
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310 | 310 | """add a new (potentially?) conflicting file the merge state |
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311 | 311 | fcl: file context for local, |
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312 | 312 | fco: file context for remote, |
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313 | 313 | fca: file context for ancestors, |
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314 | 314 | fd: file path of the resulting merge. |
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315 | 315 | |
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316 | 316 | note: also write the local version to the `.hg/merge` directory. |
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317 | 317 | """ |
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318 | 318 | hash = util.sha1(fcl.path()).hexdigest() |
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319 | 319 | self._repo.vfs.write('merge/' + hash, fcl.data()) |
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320 | 320 | self._state[fd] = ['u', hash, fcl.path(), |
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321 | 321 | fca.path(), hex(fca.filenode()), |
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322 | 322 | fco.path(), hex(fco.filenode()), |
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323 | 323 | fcl.flags()] |
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324 | 324 | self._dirty = True |
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325 | 325 | |
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326 | 326 | def __contains__(self, dfile): |
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327 | 327 | return dfile in self._state |
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328 | 328 | |
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329 | 329 | def __getitem__(self, dfile): |
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330 | 330 | return self._state[dfile][0] |
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331 | 331 | |
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332 | 332 | def __iter__(self): |
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333 | 333 | return iter(sorted(self._state)) |
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334 | 334 | |
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335 | 335 | def files(self): |
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336 | 336 | return self._state.keys() |
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337 | 337 | |
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338 | 338 | def mark(self, dfile, state): |
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339 | 339 | self._state[dfile][0] = state |
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340 | 340 | self._dirty = True |
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341 | 341 | |
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342 | 342 | def mdstate(self): |
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343 | 343 | return self._mdstate |
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344 | 344 | |
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345 | 345 | def unresolved(self): |
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346 | 346 | """Obtain the paths of unresolved files.""" |
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347 | 347 | |
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348 | 348 | for f, entry in self._state.items(): |
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349 | 349 | if entry[0] == 'u': |
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350 | 350 | yield f |
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351 | 351 | |
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352 | 352 | def driverresolved(self): |
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353 | 353 | """Obtain the paths of driver-resolved files.""" |
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354 | 354 | |
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355 | 355 | for f, entry in self._state.items(): |
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356 | 356 | if entry[0] == 'd': |
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357 | 357 | yield f |
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358 | 358 | |
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359 | 359 | def _resolve(self, preresolve, dfile, wctx, labels=None): |
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360 | 360 | """rerun merge process for file path `dfile`""" |
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361 | 361 | if self[dfile] in 'rd': |
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362 | 362 | return True, 0 |
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363 | 363 | stateentry = self._state[dfile] |
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364 | 364 | state, hash, lfile, afile, anode, ofile, onode, flags = stateentry |
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365 | 365 | octx = self._repo[self._other] |
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366 | 366 | fcd = wctx[dfile] |
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367 | 367 | fco = octx[ofile] |
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368 | 368 | fca = self._repo.filectx(afile, fileid=anode) |
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369 | 369 | # "premerge" x flags |
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370 | 370 | flo = fco.flags() |
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371 | 371 | fla = fca.flags() |
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372 | 372 | if 'x' in flags + flo + fla and 'l' not in flags + flo + fla: |
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373 | 373 | if fca.node() == nullid: |
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374 | 374 | if preresolve: |
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375 | 375 | self._repo.ui.warn( |
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376 | 376 | _('warning: cannot merge flags for %s\n') % afile) |
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377 | 377 | elif flags == fla: |
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378 | 378 | flags = flo |
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379 | 379 | if preresolve: |
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380 | 380 | # restore local |
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381 | 381 | f = self._repo.vfs('merge/' + hash) |
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382 | 382 | self._repo.wwrite(dfile, f.read(), flags) |
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383 | 383 | f.close() |
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384 | 384 | complete, r = filemerge.premerge(self._repo, self._local, lfile, |
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385 | 385 | fcd, fco, fca, labels=labels) |
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386 | 386 | else: |
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387 | 387 | complete, r = filemerge.filemerge(self._repo, self._local, lfile, |
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388 | 388 | fcd, fco, fca, labels=labels) |
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389 | 389 | if r is None: |
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390 | 390 | # no real conflict |
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391 | 391 | del self._state[dfile] |
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392 | 392 | self._dirty = True |
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393 | 393 | elif not r: |
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394 | 394 | self.mark(dfile, 'r') |
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395 | 395 | return complete, r |
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396 | 396 | |
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397 | 397 | def preresolve(self, dfile, wctx, labels=None): |
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398 | 398 | return self._resolve(True, dfile, wctx, labels=labels) |
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399 | 399 | |
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400 | 400 | def resolve(self, dfile, wctx, labels=None): |
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401 | 401 | """rerun merge process for file path `dfile`""" |
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402 | 402 | return self._resolve(False, dfile, wctx, labels=labels)[1] |
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403 | 403 | |
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404 | 404 | def _checkunknownfile(repo, wctx, mctx, f, f2=None): |
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405 | 405 | if f2 is None: |
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406 | 406 | f2 = f |
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407 | 407 | return (os.path.isfile(repo.wjoin(f)) |
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408 | 408 | and repo.wvfs.audit.check(f) |
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409 | 409 | and repo.dirstate.normalize(f) not in repo.dirstate |
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410 | 410 | and mctx[f2].cmp(wctx[f])) |
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411 | 411 | |
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412 | 412 | def _checkunknownfiles(repo, wctx, mctx, force, actions): |
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413 | 413 | """ |
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414 | 414 | Considers any actions that care about the presence of conflicting unknown |
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415 | 415 | files. For some actions, the result is to abort; for others, it is to |
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416 | 416 | choose a different action. |
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417 | 417 | """ |
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418 | 418 | aborts = [] |
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419 | 419 | if not force: |
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420 | 420 | for f, (m, args, msg) in actions.iteritems(): |
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421 | 421 | if m in ('c', 'dc'): |
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422 | 422 | if _checkunknownfile(repo, wctx, mctx, f): |
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423 | 423 | aborts.append(f) |
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424 | 424 | elif m == 'dg': |
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425 | 425 | if _checkunknownfile(repo, wctx, mctx, f, args[0]): |
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426 | 426 | aborts.append(f) |
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427 | 427 | |
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428 | 428 | for f in sorted(aborts): |
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429 | 429 | repo.ui.warn(_("%s: untracked file differs\n") % f) |
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430 | 430 | if aborts: |
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431 | 431 | raise error.Abort(_("untracked files in working directory differ " |
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432 | 432 | "from files in requested revision")) |
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433 | 433 | |
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434 | 434 | for f, (m, args, msg) in actions.iteritems(): |
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435 | 435 | if m == 'c': |
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436 | 436 | actions[f] = ('g', args, msg) |
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437 | 437 | elif m == 'cm': |
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438 | 438 | fl2, anc = args |
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439 | 439 | different = _checkunknownfile(repo, wctx, mctx, f) |
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440 | 440 | if different: |
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441 | 441 | actions[f] = ('m', (f, f, None, False, anc), |
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442 | 442 | "remote differs from untracked local") |
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443 | 443 | else: |
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444 | 444 | actions[f] = ('g', (fl2,), "remote created") |
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445 | 445 | |
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446 | 446 | def _forgetremoved(wctx, mctx, branchmerge): |
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447 | 447 | """ |
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448 | 448 | Forget removed files |
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449 | 449 | |
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450 | 450 | If we're jumping between revisions (as opposed to merging), and if |
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451 | 451 | neither the working directory nor the target rev has the file, |
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452 | 452 | then we need to remove it from the dirstate, to prevent the |
|
453 | 453 | dirstate from listing the file when it is no longer in the |
|
454 | 454 | manifest. |
|
455 | 455 | |
|
456 | 456 | If we're merging, and the other revision has removed a file |
|
457 | 457 | that is not present in the working directory, we need to mark it |
|
458 | 458 | as removed. |
|
459 | 459 | """ |
|
460 | 460 | |
|
461 | 461 | actions = {} |
|
462 | 462 | m = 'f' |
|
463 | 463 | if branchmerge: |
|
464 | 464 | m = 'r' |
|
465 | 465 | for f in wctx.deleted(): |
|
466 | 466 | if f not in mctx: |
|
467 | 467 | actions[f] = m, None, "forget deleted" |
|
468 | 468 | |
|
469 | 469 | if not branchmerge: |
|
470 | 470 | for f in wctx.removed(): |
|
471 | 471 | if f not in mctx: |
|
472 | 472 | actions[f] = 'f', None, "forget removed" |
|
473 | 473 | |
|
474 | 474 | return actions |
|
475 | 475 | |
|
476 | 476 | def _checkcollision(repo, wmf, actions): |
|
477 | 477 | # build provisional merged manifest up |
|
478 | 478 | pmmf = set(wmf) |
|
479 | 479 | |
|
480 | 480 | if actions: |
|
481 | 481 | # k, dr, e and rd are no-op |
|
482 | 482 | for m in 'a', 'f', 'g', 'cd', 'dc': |
|
483 | 483 | for f, args, msg in actions[m]: |
|
484 | 484 | pmmf.add(f) |
|
485 | 485 | for f, args, msg in actions['r']: |
|
486 | 486 | pmmf.discard(f) |
|
487 | 487 | for f, args, msg in actions['dm']: |
|
488 | 488 | f2, flags = args |
|
489 | 489 | pmmf.discard(f2) |
|
490 | 490 | pmmf.add(f) |
|
491 | 491 | for f, args, msg in actions['dg']: |
|
492 | 492 | pmmf.add(f) |
|
493 | 493 | for f, args, msg in actions['m']: |
|
494 | 494 | f1, f2, fa, move, anc = args |
|
495 | 495 | if move: |
|
496 | 496 | pmmf.discard(f1) |
|
497 | 497 | pmmf.add(f) |
|
498 | 498 | |
|
499 | 499 | # check case-folding collision in provisional merged manifest |
|
500 | 500 | foldmap = {} |
|
501 | 501 | for f in sorted(pmmf): |
|
502 | 502 | fold = util.normcase(f) |
|
503 | 503 | if fold in foldmap: |
|
504 | 504 | raise error.Abort(_("case-folding collision between %s and %s") |
|
505 | 505 | % (f, foldmap[fold])) |
|
506 | 506 | foldmap[fold] = f |
|
507 | 507 | |
|
508 | 508 | # check case-folding of directories |
|
509 | 509 | foldprefix = unfoldprefix = lastfull = '' |
|
510 | 510 | for fold, f in sorted(foldmap.items()): |
|
511 | 511 | if fold.startswith(foldprefix) and not f.startswith(unfoldprefix): |
|
512 | 512 | # the folded prefix matches but actual casing is different |
|
513 | 513 | raise error.Abort(_("case-folding collision between " |
|
514 | 514 | "%s and directory of %s") % (lastfull, f)) |
|
515 | 515 | foldprefix = fold + '/' |
|
516 | 516 | unfoldprefix = f + '/' |
|
517 | 517 | lastfull = f |
|
518 | 518 | |
|
519 | 519 | def driverpreprocess(repo, ms, wctx, labels=None): |
|
520 | 520 | """run the preprocess step of the merge driver, if any |
|
521 | 521 | |
|
522 | 522 | This is currently not implemented -- it's an extension point.""" |
|
523 | 523 | return True |
|
524 | 524 | |
|
525 | 525 | def driverconclude(repo, ms, wctx, labels=None): |
|
526 | 526 | """run the conclude step of the merge driver, if any |
|
527 | 527 | |
|
528 | 528 | This is currently not implemented -- it's an extension point.""" |
|
529 | 529 | return True |
|
530 | 530 | |
|
531 | 531 | def manifestmerge(repo, wctx, p2, pa, branchmerge, force, partial, |
|
532 | 532 | acceptremote, followcopies): |
|
533 | 533 | """ |
|
534 | 534 | Merge p1 and p2 with ancestor pa and generate merge action list |
|
535 | 535 | |
|
536 | 536 | branchmerge and force are as passed in to update |
|
537 | 537 | partial = function to filter file lists |
|
538 | 538 | acceptremote = accept the incoming changes without prompting |
|
539 | 539 | """ |
|
540 | 540 | |
|
541 | 541 | copy, movewithdir, diverge, renamedelete = {}, {}, {}, {} |
|
542 | 542 | |
|
543 | 543 | # manifests fetched in order are going to be faster, so prime the caches |
|
544 | 544 | [x.manifest() for x in |
|
545 | 545 | sorted(wctx.parents() + [p2, pa], key=lambda x: x.rev())] |
|
546 | 546 | |
|
547 | 547 | if followcopies: |
|
548 | 548 | ret = copies.mergecopies(repo, wctx, p2, pa) |
|
549 | 549 | copy, movewithdir, diverge, renamedelete = ret |
|
550 | 550 | |
|
551 | 551 | repo.ui.note(_("resolving manifests\n")) |
|
552 | 552 | repo.ui.debug(" branchmerge: %s, force: %s, partial: %s\n" |
|
553 | 553 | % (bool(branchmerge), bool(force), bool(partial))) |
|
554 | 554 | repo.ui.debug(" ancestor: %s, local: %s, remote: %s\n" % (pa, wctx, p2)) |
|
555 | 555 | |
|
556 | 556 | m1, m2, ma = wctx.manifest(), p2.manifest(), pa.manifest() |
|
557 | 557 | copied = set(copy.values()) |
|
558 | 558 | copied.update(movewithdir.values()) |
|
559 | 559 | |
|
560 | 560 | if '.hgsubstate' in m1: |
|
561 | 561 | # check whether sub state is modified |
|
562 | 562 | for s in sorted(wctx.substate): |
|
563 | 563 | if wctx.sub(s).dirty(): |
|
564 | 564 | m1['.hgsubstate'] += '+' |
|
565 | 565 | break |
|
566 | 566 | |
|
567 | 567 | # Compare manifests |
|
568 | 568 | diff = m1.diff(m2) |
|
569 | 569 | |
|
570 | 570 | actions = {} |
|
571 | 571 | for f, ((n1, fl1), (n2, fl2)) in diff.iteritems(): |
|
572 | 572 | if partial and not partial(f): |
|
573 | 573 | continue |
|
574 | 574 | if n1 and n2: # file exists on both local and remote side |
|
575 | 575 | if f not in ma: |
|
576 | 576 | fa = copy.get(f, None) |
|
577 | 577 | if fa is not None: |
|
578 | 578 | actions[f] = ('m', (f, f, fa, False, pa.node()), |
|
579 | 579 | "both renamed from " + fa) |
|
580 | 580 | else: |
|
581 | 581 | actions[f] = ('m', (f, f, None, False, pa.node()), |
|
582 | 582 | "both created") |
|
583 | 583 | else: |
|
584 | 584 | a = ma[f] |
|
585 | 585 | fla = ma.flags(f) |
|
586 | 586 | nol = 'l' not in fl1 + fl2 + fla |
|
587 | 587 | if n2 == a and fl2 == fla: |
|
588 | 588 | actions[f] = ('k' , (), "remote unchanged") |
|
589 | 589 | elif n1 == a and fl1 == fla: # local unchanged - use remote |
|
590 | 590 | if n1 == n2: # optimization: keep local content |
|
591 | 591 | actions[f] = ('e', (fl2,), "update permissions") |
|
592 | 592 | else: |
|
593 | 593 | actions[f] = ('g', (fl2,), "remote is newer") |
|
594 | 594 | elif nol and n2 == a: # remote only changed 'x' |
|
595 | 595 | actions[f] = ('e', (fl2,), "update permissions") |
|
596 | 596 | elif nol and n1 == a: # local only changed 'x' |
|
597 | 597 | actions[f] = ('g', (fl1,), "remote is newer") |
|
598 | 598 | else: # both changed something |
|
599 | 599 | actions[f] = ('m', (f, f, f, False, pa.node()), |
|
600 | 600 | "versions differ") |
|
601 | 601 | elif n1: # file exists only on local side |
|
602 | 602 | if f in copied: |
|
603 | 603 | pass # we'll deal with it on m2 side |
|
604 | 604 | elif f in movewithdir: # directory rename, move local |
|
605 | 605 | f2 = movewithdir[f] |
|
606 | 606 | if f2 in m2: |
|
607 | 607 | actions[f2] = ('m', (f, f2, None, True, pa.node()), |
|
608 | 608 | "remote directory rename, both created") |
|
609 | 609 | else: |
|
610 | 610 | actions[f2] = ('dm', (f, fl1), |
|
611 | 611 | "remote directory rename - move from " + f) |
|
612 | 612 | elif f in copy: |
|
613 | 613 | f2 = copy[f] |
|
614 | 614 | actions[f] = ('m', (f, f2, f2, False, pa.node()), |
|
615 | 615 | "local copied/moved from " + f2) |
|
616 | 616 | elif f in ma: # clean, a different, no remote |
|
617 | 617 | if n1 != ma[f]: |
|
618 | 618 | if acceptremote: |
|
619 | 619 | actions[f] = ('r', None, "remote delete") |
|
620 | 620 | else: |
|
621 | 621 | actions[f] = ('cd', None, "prompt changed/deleted") |
|
622 | 622 | elif n1[20:] == 'a': |
|
623 | 623 | # This extra 'a' is added by working copy manifest to mark |
|
624 | 624 | # the file as locally added. We should forget it instead of |
|
625 | 625 | # deleting it. |
|
626 | 626 | actions[f] = ('f', None, "remote deleted") |
|
627 | 627 | else: |
|
628 | 628 | actions[f] = ('r', None, "other deleted") |
|
629 | 629 | elif n2: # file exists only on remote side |
|
630 | 630 | if f in copied: |
|
631 | 631 | pass # we'll deal with it on m1 side |
|
632 | 632 | elif f in movewithdir: |
|
633 | 633 | f2 = movewithdir[f] |
|
634 | 634 | if f2 in m1: |
|
635 | 635 | actions[f2] = ('m', (f2, f, None, False, pa.node()), |
|
636 | 636 | "local directory rename, both created") |
|
637 | 637 | else: |
|
638 | 638 | actions[f2] = ('dg', (f, fl2), |
|
639 | 639 | "local directory rename - get from " + f) |
|
640 | 640 | elif f in copy: |
|
641 | 641 | f2 = copy[f] |
|
642 | 642 | if f2 in m2: |
|
643 | 643 | actions[f] = ('m', (f2, f, f2, False, pa.node()), |
|
644 | 644 | "remote copied from " + f2) |
|
645 | 645 | else: |
|
646 | 646 | actions[f] = ('m', (f2, f, f2, True, pa.node()), |
|
647 | 647 | "remote moved from " + f2) |
|
648 | 648 | elif f not in ma: |
|
649 | 649 | # local unknown, remote created: the logic is described by the |
|
650 | 650 | # following table: |
|
651 | 651 | # |
|
652 | 652 | # force branchmerge different | action |
|
653 | 653 | # n * * | create |
|
654 | 654 | # y n * | create |
|
655 | 655 | # y y n | create |
|
656 | 656 | # y y y | merge |
|
657 | 657 | # |
|
658 | 658 | # Checking whether the files are different is expensive, so we |
|
659 | 659 | # don't do that when we can avoid it. |
|
660 | 660 | if not force: |
|
661 | 661 | actions[f] = ('c', (fl2,), "remote created") |
|
662 | 662 | elif not branchmerge: |
|
663 | 663 | actions[f] = ('c', (fl2,), "remote created") |
|
664 | 664 | else: |
|
665 | 665 | actions[f] = ('cm', (fl2, pa.node()), |
|
666 | 666 | "remote created, get or merge") |
|
667 | 667 | elif n2 != ma[f]: |
|
668 | 668 | if acceptremote: |
|
669 | 669 | actions[f] = ('c', (fl2,), "remote recreating") |
|
670 | 670 | else: |
|
671 | 671 | actions[f] = ('dc', (fl2,), "prompt deleted/changed") |
|
672 | 672 | |
|
673 | 673 | return actions, diverge, renamedelete |
|
674 | 674 | |
|
675 | 675 | def _resolvetrivial(repo, wctx, mctx, ancestor, actions): |
|
676 | 676 | """Resolves false conflicts where the nodeid changed but the content |
|
677 | 677 | remained the same.""" |
|
678 | 678 | |
|
679 | 679 | for f, (m, args, msg) in actions.items(): |
|
680 | 680 | if m == 'cd' and f in ancestor and not wctx[f].cmp(ancestor[f]): |
|
681 | 681 | # local did change but ended up with same content |
|
682 | 682 | actions[f] = 'r', None, "prompt same" |
|
683 | 683 | elif m == 'dc' and f in ancestor and not mctx[f].cmp(ancestor[f]): |
|
684 | 684 | # remote did change but ended up with same content |
|
685 | 685 | del actions[f] # don't get = keep local deleted |
|
686 | 686 | |
|
687 | 687 | def calculateupdates(repo, wctx, mctx, ancestors, branchmerge, force, partial, |
|
688 | 688 | acceptremote, followcopies): |
|
689 | 689 | "Calculate the actions needed to merge mctx into wctx using ancestors" |
|
690 | 690 | |
|
691 | 691 | if len(ancestors) == 1: # default |
|
692 | 692 | actions, diverge, renamedelete = manifestmerge( |
|
693 | 693 | repo, wctx, mctx, ancestors[0], branchmerge, force, partial, |
|
694 | 694 | acceptremote, followcopies) |
|
695 | 695 | _checkunknownfiles(repo, wctx, mctx, force, actions) |
|
696 | 696 | |
|
697 | 697 | else: # only when merge.preferancestor=* - the default |
|
698 | 698 | repo.ui.note( |
|
699 | 699 | _("note: merging %s and %s using bids from ancestors %s\n") % |
|
700 | 700 | (wctx, mctx, _(' and ').join(str(anc) for anc in ancestors))) |
|
701 | 701 | |
|
702 | 702 | # Call for bids |
|
703 | 703 | fbids = {} # mapping filename to bids (action method to list af actions) |
|
704 | 704 | diverge, renamedelete = None, None |
|
705 | 705 | for ancestor in ancestors: |
|
706 | 706 | repo.ui.note(_('\ncalculating bids for ancestor %s\n') % ancestor) |
|
707 | 707 | actions, diverge1, renamedelete1 = manifestmerge( |
|
708 | 708 | repo, wctx, mctx, ancestor, branchmerge, force, partial, |
|
709 | 709 | acceptremote, followcopies) |
|
710 | 710 | _checkunknownfiles(repo, wctx, mctx, force, actions) |
|
711 | 711 | |
|
712 | 712 | # Track the shortest set of warning on the theory that bid |
|
713 | 713 | # merge will correctly incorporate more information |
|
714 | 714 | if diverge is None or len(diverge1) < len(diverge): |
|
715 | 715 | diverge = diverge1 |
|
716 | 716 | if renamedelete is None or len(renamedelete) < len(renamedelete1): |
|
717 | 717 | renamedelete = renamedelete1 |
|
718 | 718 | |
|
719 | 719 | for f, a in sorted(actions.iteritems()): |
|
720 | 720 | m, args, msg = a |
|
721 | 721 | repo.ui.debug(' %s: %s -> %s\n' % (f, msg, m)) |
|
722 | 722 | if f in fbids: |
|
723 | 723 | d = fbids[f] |
|
724 | 724 | if m in d: |
|
725 | 725 | d[m].append(a) |
|
726 | 726 | else: |
|
727 | 727 | d[m] = [a] |
|
728 | 728 | else: |
|
729 | 729 | fbids[f] = {m: [a]} |
|
730 | 730 | |
|
731 | 731 | # Pick the best bid for each file |
|
732 | 732 | repo.ui.note(_('\nauction for merging merge bids\n')) |
|
733 | 733 | actions = {} |
|
734 | 734 | for f, bids in sorted(fbids.items()): |
|
735 | 735 | # bids is a mapping from action method to list af actions |
|
736 | 736 | # Consensus? |
|
737 | 737 | if len(bids) == 1: # all bids are the same kind of method |
|
738 | 738 | m, l = bids.items()[0] |
|
739 | 739 | if all(a == l[0] for a in l[1:]): # len(bids) is > 1 |
|
740 | 740 | repo.ui.note(" %s: consensus for %s\n" % (f, m)) |
|
741 | 741 | actions[f] = l[0] |
|
742 | 742 | continue |
|
743 | 743 | # If keep is an option, just do it. |
|
744 | 744 | if 'k' in bids: |
|
745 | 745 | repo.ui.note(" %s: picking 'keep' action\n" % f) |
|
746 | 746 | actions[f] = bids['k'][0] |
|
747 | 747 | continue |
|
748 | 748 | # If there are gets and they all agree [how could they not?], do it. |
|
749 | 749 | if 'g' in bids: |
|
750 | 750 | ga0 = bids['g'][0] |
|
751 | 751 | if all(a == ga0 for a in bids['g'][1:]): |
|
752 | 752 | repo.ui.note(" %s: picking 'get' action\n" % f) |
|
753 | 753 | actions[f] = ga0 |
|
754 | 754 | continue |
|
755 | 755 | # TODO: Consider other simple actions such as mode changes |
|
756 | 756 | # Handle inefficient democrazy. |
|
757 | 757 | repo.ui.note(_(' %s: multiple bids for merge action:\n') % f) |
|
758 | 758 | for m, l in sorted(bids.items()): |
|
759 | 759 | for _f, args, msg in l: |
|
760 | 760 | repo.ui.note(' %s -> %s\n' % (msg, m)) |
|
761 | 761 | # Pick random action. TODO: Instead, prompt user when resolving |
|
762 | 762 | m, l = bids.items()[0] |
|
763 | 763 | repo.ui.warn(_(' %s: ambiguous merge - picked %s action\n') % |
|
764 | 764 | (f, m)) |
|
765 | 765 | actions[f] = l[0] |
|
766 | 766 | continue |
|
767 | 767 | repo.ui.note(_('end of auction\n\n')) |
|
768 | 768 | |
|
769 | 769 | _resolvetrivial(repo, wctx, mctx, ancestors[0], actions) |
|
770 | 770 | |
|
771 | 771 | if wctx.rev() is None: |
|
772 | 772 | fractions = _forgetremoved(wctx, mctx, branchmerge) |
|
773 | 773 | actions.update(fractions) |
|
774 | 774 | |
|
775 | 775 | return actions, diverge, renamedelete |
|
776 | 776 | |
|
777 | 777 | def batchremove(repo, actions): |
|
778 | 778 | """apply removes to the working directory |
|
779 | 779 | |
|
780 | 780 | yields tuples for progress updates |
|
781 | 781 | """ |
|
782 | 782 | verbose = repo.ui.verbose |
|
783 | 783 | unlink = util.unlinkpath |
|
784 | 784 | wjoin = repo.wjoin |
|
785 | 785 | audit = repo.wvfs.audit |
|
786 | 786 | i = 0 |
|
787 | 787 | for f, args, msg in actions: |
|
788 | 788 | repo.ui.debug(" %s: %s -> r\n" % (f, msg)) |
|
789 | 789 | if verbose: |
|
790 | 790 | repo.ui.note(_("removing %s\n") % f) |
|
791 | 791 | audit(f) |
|
792 | 792 | try: |
|
793 | 793 | unlink(wjoin(f), ignoremissing=True) |
|
794 | 794 | except OSError as inst: |
|
795 | 795 | repo.ui.warn(_("update failed to remove %s: %s!\n") % |
|
796 | 796 | (f, inst.strerror)) |
|
797 | 797 | if i == 100: |
|
798 | 798 | yield i, f |
|
799 | 799 | i = 0 |
|
800 | 800 | i += 1 |
|
801 | 801 | if i > 0: |
|
802 | 802 | yield i, f |
|
803 | 803 | |
|
804 | 804 | def batchget(repo, mctx, actions): |
|
805 | 805 | """apply gets to the working directory |
|
806 | 806 | |
|
807 | 807 | mctx is the context to get from |
|
808 | 808 | |
|
809 | 809 | yields tuples for progress updates |
|
810 | 810 | """ |
|
811 | 811 | verbose = repo.ui.verbose |
|
812 | 812 | fctx = mctx.filectx |
|
813 | 813 | wwrite = repo.wwrite |
|
814 | 814 | i = 0 |
|
815 | 815 | for f, args, msg in actions: |
|
816 | 816 | repo.ui.debug(" %s: %s -> g\n" % (f, msg)) |
|
817 | 817 | if verbose: |
|
818 | 818 | repo.ui.note(_("getting %s\n") % f) |
|
819 | 819 | wwrite(f, fctx(f).data(), args[0]) |
|
820 | 820 | if i == 100: |
|
821 | 821 | yield i, f |
|
822 | 822 | i = 0 |
|
823 | 823 | i += 1 |
|
824 | 824 | if i > 0: |
|
825 | 825 | yield i, f |
|
826 | 826 | |
|
827 | 827 | def applyupdates(repo, actions, wctx, mctx, overwrite, labels=None): |
|
828 | 828 | """apply the merge action list to the working directory |
|
829 | 829 | |
|
830 | 830 | wctx is the working copy context |
|
831 | 831 | mctx is the context to be merged into the working copy |
|
832 | 832 | |
|
833 | 833 | Return a tuple of counts (updated, merged, removed, unresolved) that |
|
834 | 834 | describes how many files were affected by the update. |
|
835 | 835 | """ |
|
836 | 836 | |
|
837 | 837 | updated, merged, removed, unresolved = 0, 0, 0, 0 |
|
838 | 838 | ms = mergestate(repo) |
|
839 | 839 | ms.reset(wctx.p1().node(), mctx.node()) |
|
840 | 840 | moves = [] |
|
841 | 841 | for m, l in actions.items(): |
|
842 | 842 | l.sort() |
|
843 | 843 | |
|
844 | 844 | # prescan for merges |
|
845 | 845 | for f, args, msg in actions['m']: |
|
846 | 846 | f1, f2, fa, move, anc = args |
|
847 | 847 | if f == '.hgsubstate': # merged internally |
|
848 | 848 | continue |
|
849 | 849 | repo.ui.debug(" preserving %s for resolve of %s\n" % (f1, f)) |
|
850 | 850 | fcl = wctx[f1] |
|
851 | 851 | fco = mctx[f2] |
|
852 | 852 | actx = repo[anc] |
|
853 | 853 | if fa in actx: |
|
854 | 854 | fca = actx[fa] |
|
855 | 855 | else: |
|
856 | 856 | fca = repo.filectx(f1, fileid=nullrev) |
|
857 | 857 | ms.add(fcl, fco, fca, f) |
|
858 | 858 | if f1 != f and move: |
|
859 | 859 | moves.append(f1) |
|
860 | 860 | |
|
861 | 861 | audit = repo.wvfs.audit |
|
862 | 862 | _updating = _('updating') |
|
863 | 863 | _files = _('files') |
|
864 | 864 | progress = repo.ui.progress |
|
865 | 865 | |
|
866 | 866 | # remove renamed files after safely stored |
|
867 | 867 | for f in moves: |
|
868 | 868 | if os.path.lexists(repo.wjoin(f)): |
|
869 | 869 | repo.ui.debug("removing %s\n" % f) |
|
870 | 870 | audit(f) |
|
871 | 871 | util.unlinkpath(repo.wjoin(f)) |
|
872 | 872 | |
|
873 | 873 | numupdates = sum(len(l) for m, l in actions.items() if m != 'k') |
|
874 | 874 | |
|
875 | 875 | if [a for a in actions['r'] if a[0] == '.hgsubstate']: |
|
876 | 876 | subrepo.submerge(repo, wctx, mctx, wctx, overwrite) |
|
877 | 877 | |
|
878 | 878 | # remove in parallel (must come first) |
|
879 | 879 | z = 0 |
|
880 | 880 | prog = worker.worker(repo.ui, 0.001, batchremove, (repo,), actions['r']) |
|
881 | 881 | for i, item in prog: |
|
882 | 882 | z += i |
|
883 | 883 | progress(_updating, z, item=item, total=numupdates, unit=_files) |
|
884 | 884 | removed = len(actions['r']) |
|
885 | 885 | |
|
886 | 886 | # get in parallel |
|
887 | 887 | prog = worker.worker(repo.ui, 0.001, batchget, (repo, mctx), actions['g']) |
|
888 | 888 | for i, item in prog: |
|
889 | 889 | z += i |
|
890 | 890 | progress(_updating, z, item=item, total=numupdates, unit=_files) |
|
891 | 891 | updated = len(actions['g']) |
|
892 | 892 | |
|
893 | 893 | if [a for a in actions['g'] if a[0] == '.hgsubstate']: |
|
894 | 894 | subrepo.submerge(repo, wctx, mctx, wctx, overwrite) |
|
895 | 895 | |
|
896 | 896 | # forget (manifest only, just log it) (must come first) |
|
897 | 897 | for f, args, msg in actions['f']: |
|
898 | 898 | repo.ui.debug(" %s: %s -> f\n" % (f, msg)) |
|
899 | 899 | z += 1 |
|
900 | 900 | progress(_updating, z, item=f, total=numupdates, unit=_files) |
|
901 | 901 | |
|
902 | 902 | # re-add (manifest only, just log it) |
|
903 | 903 | for f, args, msg in actions['a']: |
|
904 | 904 | repo.ui.debug(" %s: %s -> a\n" % (f, msg)) |
|
905 | 905 | z += 1 |
|
906 | 906 | progress(_updating, z, item=f, total=numupdates, unit=_files) |
|
907 | 907 | |
|
908 | 908 | # keep (noop, just log it) |
|
909 | 909 | for f, args, msg in actions['k']: |
|
910 | 910 | repo.ui.debug(" %s: %s -> k\n" % (f, msg)) |
|
911 | 911 | # no progress |
|
912 | 912 | |
|
913 | 913 | # directory rename, move local |
|
914 | 914 | for f, args, msg in actions['dm']: |
|
915 | 915 | repo.ui.debug(" %s: %s -> dm\n" % (f, msg)) |
|
916 | 916 | z += 1 |
|
917 | 917 | progress(_updating, z, item=f, total=numupdates, unit=_files) |
|
918 | 918 | f0, flags = args |
|
919 | 919 | repo.ui.note(_("moving %s to %s\n") % (f0, f)) |
|
920 | 920 | audit(f) |
|
921 | 921 | repo.wwrite(f, wctx.filectx(f0).data(), flags) |
|
922 | 922 | util.unlinkpath(repo.wjoin(f0)) |
|
923 | 923 | updated += 1 |
|
924 | 924 | |
|
925 | 925 | # local directory rename, get |
|
926 | 926 | for f, args, msg in actions['dg']: |
|
927 | 927 | repo.ui.debug(" %s: %s -> dg\n" % (f, msg)) |
|
928 | 928 | z += 1 |
|
929 | 929 | progress(_updating, z, item=f, total=numupdates, unit=_files) |
|
930 | 930 | f0, flags = args |
|
931 | 931 | repo.ui.note(_("getting %s to %s\n") % (f0, f)) |
|
932 | 932 | repo.wwrite(f, mctx.filectx(f0).data(), flags) |
|
933 | 933 | updated += 1 |
|
934 | 934 | |
|
935 | 935 | # exec |
|
936 | 936 | for f, args, msg in actions['e']: |
|
937 | 937 | repo.ui.debug(" %s: %s -> e\n" % (f, msg)) |
|
938 | 938 | z += 1 |
|
939 | 939 | progress(_updating, z, item=f, total=numupdates, unit=_files) |
|
940 | 940 | flags, = args |
|
941 | 941 | audit(f) |
|
942 | 942 | util.setflags(repo.wjoin(f), 'l' in flags, 'x' in flags) |
|
943 | 943 | updated += 1 |
|
944 | 944 | |
|
945 | mergeactions = actions['m'] | |
|
946 | # the ordering is important here -- ms.mergedriver will raise if the merge | |
|
947 | # driver has changed, and we want to be able to bypass it when overwrite is | |
|
948 | # True | |
|
949 | usemergedriver = not overwrite and mergeactions and ms.mergedriver | |
|
950 | ||
|
951 | if usemergedriver: | |
|
952 | ms.commit() | |
|
953 | proceed = driverpreprocess(repo, ms, wctx, labels=labels) | |
|
954 | # the driver might leave some files unresolved | |
|
955 | unresolvedf = set(ms.unresolved()) | |
|
956 | if not proceed: | |
|
957 | # XXX setting unresolved to at least 1 is a hack to make sure we | |
|
958 | # error out | |
|
959 | return updated, merged, removed, max(len(unresolvedf), 1) | |
|
960 | newactions = [] | |
|
961 | for f, args, msg in mergeactions: | |
|
962 | if f in unresolvedf: | |
|
963 | newactions.append((f, args, msg)) | |
|
964 | mergeactions = newactions | |
|
965 | ||
|
945 | 966 | # premerge |
|
946 | 967 | tocomplete = [] |
|
947 | 968 | for f, args, msg in actions['m']: |
|
948 | 969 | repo.ui.debug(" %s: %s -> m (premerge)\n" % (f, msg)) |
|
949 | 970 | z += 1 |
|
950 | 971 | progress(_updating, z, item=f, total=numupdates, unit=_files) |
|
951 | 972 | if f == '.hgsubstate': # subrepo states need updating |
|
952 | 973 | subrepo.submerge(repo, wctx, mctx, wctx.ancestor(mctx), |
|
953 | 974 | overwrite) |
|
954 | 975 | continue |
|
955 | 976 | audit(f) |
|
956 | 977 | complete, r = ms.preresolve(f, wctx, labels=labels) |
|
957 | 978 | if complete: |
|
958 | 979 | if r is not None and r > 0: |
|
959 | 980 | unresolved += 1 |
|
960 | 981 | else: |
|
961 | 982 | if r is None: |
|
962 | 983 | updated += 1 |
|
963 | 984 | else: |
|
964 | 985 | merged += 1 |
|
965 | 986 | else: |
|
966 | 987 | numupdates += 1 |
|
967 | 988 | tocomplete.append((f, args, msg)) |
|
968 | 989 | |
|
969 | 990 | # merge |
|
970 | 991 | for f, args, msg in tocomplete: |
|
971 | 992 | repo.ui.debug(" %s: %s -> m (merge)\n" % (f, msg)) |
|
972 | 993 | z += 1 |
|
973 | 994 | progress(_updating, z, item=f, total=numupdates, unit=_files) |
|
974 | 995 | r = ms.resolve(f, wctx, labels=labels) |
|
975 | 996 | if r is not None and r > 0: |
|
976 | 997 | unresolved += 1 |
|
977 | 998 | else: |
|
978 | 999 | if r is None: |
|
979 | 1000 | updated += 1 |
|
980 | 1001 | else: |
|
981 | 1002 | merged += 1 |
|
982 | 1003 | |
|
983 | 1004 | ms.commit() |
|
984 | 1005 | progress(_updating, None, total=numupdates, unit=_files) |
|
985 | 1006 | |
|
986 | 1007 | return updated, merged, removed, unresolved |
|
987 | 1008 | |
|
988 | 1009 | def recordupdates(repo, actions, branchmerge): |
|
989 | 1010 | "record merge actions to the dirstate" |
|
990 | 1011 | # remove (must come first) |
|
991 | 1012 | for f, args, msg in actions['r']: |
|
992 | 1013 | if branchmerge: |
|
993 | 1014 | repo.dirstate.remove(f) |
|
994 | 1015 | else: |
|
995 | 1016 | repo.dirstate.drop(f) |
|
996 | 1017 | |
|
997 | 1018 | # forget (must come first) |
|
998 | 1019 | for f, args, msg in actions['f']: |
|
999 | 1020 | repo.dirstate.drop(f) |
|
1000 | 1021 | |
|
1001 | 1022 | # re-add |
|
1002 | 1023 | for f, args, msg in actions['a']: |
|
1003 | 1024 | if not branchmerge: |
|
1004 | 1025 | repo.dirstate.add(f) |
|
1005 | 1026 | |
|
1006 | 1027 | # exec change |
|
1007 | 1028 | for f, args, msg in actions['e']: |
|
1008 | 1029 | repo.dirstate.normallookup(f) |
|
1009 | 1030 | |
|
1010 | 1031 | # keep |
|
1011 | 1032 | for f, args, msg in actions['k']: |
|
1012 | 1033 | pass |
|
1013 | 1034 | |
|
1014 | 1035 | # get |
|
1015 | 1036 | for f, args, msg in actions['g']: |
|
1016 | 1037 | if branchmerge: |
|
1017 | 1038 | repo.dirstate.otherparent(f) |
|
1018 | 1039 | else: |
|
1019 | 1040 | repo.dirstate.normal(f) |
|
1020 | 1041 | |
|
1021 | 1042 | # merge |
|
1022 | 1043 | for f, args, msg in actions['m']: |
|
1023 | 1044 | f1, f2, fa, move, anc = args |
|
1024 | 1045 | if branchmerge: |
|
1025 | 1046 | # We've done a branch merge, mark this file as merged |
|
1026 | 1047 | # so that we properly record the merger later |
|
1027 | 1048 | repo.dirstate.merge(f) |
|
1028 | 1049 | if f1 != f2: # copy/rename |
|
1029 | 1050 | if move: |
|
1030 | 1051 | repo.dirstate.remove(f1) |
|
1031 | 1052 | if f1 != f: |
|
1032 | 1053 | repo.dirstate.copy(f1, f) |
|
1033 | 1054 | else: |
|
1034 | 1055 | repo.dirstate.copy(f2, f) |
|
1035 | 1056 | else: |
|
1036 | 1057 | # We've update-merged a locally modified file, so |
|
1037 | 1058 | # we set the dirstate to emulate a normal checkout |
|
1038 | 1059 | # of that file some time in the past. Thus our |
|
1039 | 1060 | # merge will appear as a normal local file |
|
1040 | 1061 | # modification. |
|
1041 | 1062 | if f2 == f: # file not locally copied/moved |
|
1042 | 1063 | repo.dirstate.normallookup(f) |
|
1043 | 1064 | if move: |
|
1044 | 1065 | repo.dirstate.drop(f1) |
|
1045 | 1066 | |
|
1046 | 1067 | # directory rename, move local |
|
1047 | 1068 | for f, args, msg in actions['dm']: |
|
1048 | 1069 | f0, flag = args |
|
1049 | 1070 | if branchmerge: |
|
1050 | 1071 | repo.dirstate.add(f) |
|
1051 | 1072 | repo.dirstate.remove(f0) |
|
1052 | 1073 | repo.dirstate.copy(f0, f) |
|
1053 | 1074 | else: |
|
1054 | 1075 | repo.dirstate.normal(f) |
|
1055 | 1076 | repo.dirstate.drop(f0) |
|
1056 | 1077 | |
|
1057 | 1078 | # directory rename, get |
|
1058 | 1079 | for f, args, msg in actions['dg']: |
|
1059 | 1080 | f0, flag = args |
|
1060 | 1081 | if branchmerge: |
|
1061 | 1082 | repo.dirstate.add(f) |
|
1062 | 1083 | repo.dirstate.copy(f0, f) |
|
1063 | 1084 | else: |
|
1064 | 1085 | repo.dirstate.normal(f) |
|
1065 | 1086 | |
|
1066 | 1087 | def update(repo, node, branchmerge, force, partial, ancestor=None, |
|
1067 | 1088 | mergeancestor=False, labels=None): |
|
1068 | 1089 | """ |
|
1069 | 1090 | Perform a merge between the working directory and the given node |
|
1070 | 1091 | |
|
1071 | 1092 | node = the node to update to, or None if unspecified |
|
1072 | 1093 | branchmerge = whether to merge between branches |
|
1073 | 1094 | force = whether to force branch merging or file overwriting |
|
1074 | 1095 | partial = a function to filter file lists (dirstate not updated) |
|
1075 | 1096 | mergeancestor = whether it is merging with an ancestor. If true, |
|
1076 | 1097 | we should accept the incoming changes for any prompts that occur. |
|
1077 | 1098 | If false, merging with an ancestor (fast-forward) is only allowed |
|
1078 | 1099 | between different named branches. This flag is used by rebase extension |
|
1079 | 1100 | as a temporary fix and should be avoided in general. |
|
1080 | 1101 | |
|
1081 | 1102 | The table below shows all the behaviors of the update command |
|
1082 | 1103 | given the -c and -C or no options, whether the working directory |
|
1083 | 1104 | is dirty, whether a revision is specified, and the relationship of |
|
1084 | 1105 | the parent rev to the target rev (linear, on the same named |
|
1085 | 1106 | branch, or on another named branch). |
|
1086 | 1107 | |
|
1087 | 1108 | This logic is tested by test-update-branches.t. |
|
1088 | 1109 | |
|
1089 | 1110 | -c -C dirty rev | linear same cross |
|
1090 | 1111 | n n n n | ok (1) x |
|
1091 | 1112 | n n n y | ok ok ok |
|
1092 | 1113 | n n y n | merge (2) (2) |
|
1093 | 1114 | n n y y | merge (3) (3) |
|
1094 | 1115 | n y * * | --- discard --- |
|
1095 | 1116 | y n y * | --- (4) --- |
|
1096 | 1117 | y n n * | --- ok --- |
|
1097 | 1118 | y y * * | --- (5) --- |
|
1098 | 1119 | |
|
1099 | 1120 | x = can't happen |
|
1100 | 1121 | * = don't-care |
|
1101 | 1122 | 1 = abort: not a linear update (merge or update --check to force update) |
|
1102 | 1123 | 2 = abort: uncommitted changes (commit and merge, or update --clean to |
|
1103 | 1124 | discard changes) |
|
1104 | 1125 | 3 = abort: uncommitted changes (commit or update --clean to discard changes) |
|
1105 | 1126 | 4 = abort: uncommitted changes (checked in commands.py) |
|
1106 | 1127 | 5 = incompatible options (checked in commands.py) |
|
1107 | 1128 | |
|
1108 | 1129 | Return the same tuple as applyupdates(). |
|
1109 | 1130 | """ |
|
1110 | 1131 | |
|
1111 | 1132 | onode = node |
|
1112 | 1133 | wlock = repo.wlock() |
|
1113 | 1134 | try: |
|
1114 | 1135 | wc = repo[None] |
|
1115 | 1136 | pl = wc.parents() |
|
1116 | 1137 | p1 = pl[0] |
|
1117 | 1138 | pas = [None] |
|
1118 | 1139 | if ancestor is not None: |
|
1119 | 1140 | pas = [repo[ancestor]] |
|
1120 | 1141 | |
|
1121 | 1142 | if node is None: |
|
1122 | 1143 | if (repo.ui.configbool('devel', 'all-warnings') |
|
1123 | 1144 | or repo.ui.configbool('devel', 'oldapi')): |
|
1124 | 1145 | repo.ui.develwarn('update with no target') |
|
1125 | 1146 | rev, _mark, _act = destutil.destupdate(repo) |
|
1126 | 1147 | node = repo[rev].node() |
|
1127 | 1148 | |
|
1128 | 1149 | overwrite = force and not branchmerge |
|
1129 | 1150 | |
|
1130 | 1151 | p2 = repo[node] |
|
1131 | 1152 | if pas[0] is None: |
|
1132 | 1153 | if repo.ui.configlist('merge', 'preferancestor', ['*']) == ['*']: |
|
1133 | 1154 | cahs = repo.changelog.commonancestorsheads(p1.node(), p2.node()) |
|
1134 | 1155 | pas = [repo[anc] for anc in (sorted(cahs) or [nullid])] |
|
1135 | 1156 | else: |
|
1136 | 1157 | pas = [p1.ancestor(p2, warn=branchmerge)] |
|
1137 | 1158 | |
|
1138 | 1159 | fp1, fp2, xp1, xp2 = p1.node(), p2.node(), str(p1), str(p2) |
|
1139 | 1160 | |
|
1140 | 1161 | ### check phase |
|
1141 | 1162 | if not overwrite and len(pl) > 1: |
|
1142 | 1163 | raise error.Abort(_("outstanding uncommitted merge")) |
|
1143 | 1164 | if branchmerge: |
|
1144 | 1165 | if pas == [p2]: |
|
1145 | 1166 | raise error.Abort(_("merging with a working directory ancestor" |
|
1146 | 1167 | " has no effect")) |
|
1147 | 1168 | elif pas == [p1]: |
|
1148 | 1169 | if not mergeancestor and p1.branch() == p2.branch(): |
|
1149 | 1170 | raise error.Abort(_("nothing to merge"), |
|
1150 | 1171 | hint=_("use 'hg update' " |
|
1151 | 1172 | "or check 'hg heads'")) |
|
1152 | 1173 | if not force and (wc.files() or wc.deleted()): |
|
1153 | 1174 | raise error.Abort(_("uncommitted changes"), |
|
1154 | 1175 | hint=_("use 'hg status' to list changes")) |
|
1155 | 1176 | for s in sorted(wc.substate): |
|
1156 | 1177 | wc.sub(s).bailifchanged() |
|
1157 | 1178 | |
|
1158 | 1179 | elif not overwrite: |
|
1159 | 1180 | if p1 == p2: # no-op update |
|
1160 | 1181 | # call the hooks and exit early |
|
1161 | 1182 | repo.hook('preupdate', throw=True, parent1=xp2, parent2='') |
|
1162 | 1183 | repo.hook('update', parent1=xp2, parent2='', error=0) |
|
1163 | 1184 | return 0, 0, 0, 0 |
|
1164 | 1185 | |
|
1165 | 1186 | if pas not in ([p1], [p2]): # nonlinear |
|
1166 | 1187 | dirty = wc.dirty(missing=True) |
|
1167 | 1188 | if dirty or onode is None: |
|
1168 | 1189 | # Branching is a bit strange to ensure we do the minimal |
|
1169 | 1190 | # amount of call to obsolete.background. |
|
1170 | 1191 | foreground = obsolete.foreground(repo, [p1.node()]) |
|
1171 | 1192 | # note: the <node> variable contains a random identifier |
|
1172 | 1193 | if repo[node].node() in foreground: |
|
1173 | 1194 | pas = [p1] # allow updating to successors |
|
1174 | 1195 | elif dirty: |
|
1175 | 1196 | msg = _("uncommitted changes") |
|
1176 | 1197 | if onode is None: |
|
1177 | 1198 | hint = _("commit and merge, or update --clean to" |
|
1178 | 1199 | " discard changes") |
|
1179 | 1200 | else: |
|
1180 | 1201 | hint = _("commit or update --clean to discard" |
|
1181 | 1202 | " changes") |
|
1182 | 1203 | raise error.Abort(msg, hint=hint) |
|
1183 | 1204 | else: # node is none |
|
1184 | 1205 | msg = _("not a linear update") |
|
1185 | 1206 | hint = _("merge or update --check to force update") |
|
1186 | 1207 | raise error.Abort(msg, hint=hint) |
|
1187 | 1208 | else: |
|
1188 | 1209 | # Allow jumping branches if clean and specific rev given |
|
1189 | 1210 | pas = [p1] |
|
1190 | 1211 | |
|
1191 | 1212 | # deprecated config: merge.followcopies |
|
1192 | 1213 | followcopies = False |
|
1193 | 1214 | if overwrite: |
|
1194 | 1215 | pas = [wc] |
|
1195 | 1216 | elif pas == [p2]: # backwards |
|
1196 | 1217 | pas = [wc.p1()] |
|
1197 | 1218 | elif not branchmerge and not wc.dirty(missing=True): |
|
1198 | 1219 | pass |
|
1199 | 1220 | elif pas[0] and repo.ui.configbool('merge', 'followcopies', True): |
|
1200 | 1221 | followcopies = True |
|
1201 | 1222 | |
|
1202 | 1223 | ### calculate phase |
|
1203 | 1224 | actionbyfile, diverge, renamedelete = calculateupdates( |
|
1204 | 1225 | repo, wc, p2, pas, branchmerge, force, partial, mergeancestor, |
|
1205 | 1226 | followcopies) |
|
1206 | 1227 | # Convert to dictionary-of-lists format |
|
1207 | 1228 | actions = dict((m, []) for m in 'a f g cd dc r dm dg m e k'.split()) |
|
1208 | 1229 | for f, (m, args, msg) in actionbyfile.iteritems(): |
|
1209 | 1230 | if m not in actions: |
|
1210 | 1231 | actions[m] = [] |
|
1211 | 1232 | actions[m].append((f, args, msg)) |
|
1212 | 1233 | |
|
1213 | 1234 | if not util.checkcase(repo.path): |
|
1214 | 1235 | # check collision between files only in p2 for clean update |
|
1215 | 1236 | if (not branchmerge and |
|
1216 | 1237 | (force or not wc.dirty(missing=True, branch=False))): |
|
1217 | 1238 | _checkcollision(repo, p2.manifest(), None) |
|
1218 | 1239 | else: |
|
1219 | 1240 | _checkcollision(repo, wc.manifest(), actions) |
|
1220 | 1241 | |
|
1221 | 1242 | # Prompt and create actions. TODO: Move this towards resolve phase. |
|
1222 | 1243 | for f, args, msg in sorted(actions['cd']): |
|
1223 | 1244 | if repo.ui.promptchoice( |
|
1224 | 1245 | _("local changed %s which remote deleted\n" |
|
1225 | 1246 | "use (c)hanged version or (d)elete?" |
|
1226 | 1247 | "$$ &Changed $$ &Delete") % f, 0): |
|
1227 | 1248 | actions['r'].append((f, None, "prompt delete")) |
|
1228 | 1249 | else: |
|
1229 | 1250 | actions['a'].append((f, None, "prompt keep")) |
|
1230 | 1251 | del actions['cd'][:] |
|
1231 | 1252 | |
|
1232 | 1253 | for f, args, msg in sorted(actions['dc']): |
|
1233 | 1254 | flags, = args |
|
1234 | 1255 | if repo.ui.promptchoice( |
|
1235 | 1256 | _("remote changed %s which local deleted\n" |
|
1236 | 1257 | "use (c)hanged version or leave (d)eleted?" |
|
1237 | 1258 | "$$ &Changed $$ &Deleted") % f, 0) == 0: |
|
1238 | 1259 | actions['g'].append((f, (flags,), "prompt recreating")) |
|
1239 | 1260 | del actions['dc'][:] |
|
1240 | 1261 | |
|
1241 | 1262 | ### apply phase |
|
1242 | 1263 | if not branchmerge: # just jump to the new rev |
|
1243 | 1264 | fp1, fp2, xp1, xp2 = fp2, nullid, xp2, '' |
|
1244 | 1265 | if not partial: |
|
1245 | 1266 | repo.hook('preupdate', throw=True, parent1=xp1, parent2=xp2) |
|
1246 | 1267 | # note that we're in the middle of an update |
|
1247 | 1268 | repo.vfs.write('updatestate', p2.hex()) |
|
1248 | 1269 | |
|
1249 | 1270 | stats = applyupdates(repo, actions, wc, p2, overwrite, labels=labels) |
|
1250 | 1271 | |
|
1251 | 1272 | # divergent renames |
|
1252 | 1273 | for f, fl in sorted(diverge.iteritems()): |
|
1253 | 1274 | repo.ui.warn(_("note: possible conflict - %s was renamed " |
|
1254 | 1275 | "multiple times to:\n") % f) |
|
1255 | 1276 | for nf in fl: |
|
1256 | 1277 | repo.ui.warn(" %s\n" % nf) |
|
1257 | 1278 | |
|
1258 | 1279 | # rename and delete |
|
1259 | 1280 | for f, fl in sorted(renamedelete.iteritems()): |
|
1260 | 1281 | repo.ui.warn(_("note: possible conflict - %s was deleted " |
|
1261 | 1282 | "and renamed to:\n") % f) |
|
1262 | 1283 | for nf in fl: |
|
1263 | 1284 | repo.ui.warn(" %s\n" % nf) |
|
1264 | 1285 | |
|
1265 | 1286 | if not partial: |
|
1266 | 1287 | repo.dirstate.beginparentchange() |
|
1267 | 1288 | repo.setparents(fp1, fp2) |
|
1268 | 1289 | recordupdates(repo, actions, branchmerge) |
|
1269 | 1290 | # update completed, clear state |
|
1270 | 1291 | util.unlink(repo.join('updatestate')) |
|
1271 | 1292 | |
|
1272 | 1293 | if not branchmerge: |
|
1273 | 1294 | repo.dirstate.setbranch(p2.branch()) |
|
1274 | 1295 | repo.dirstate.endparentchange() |
|
1275 | 1296 | finally: |
|
1276 | 1297 | wlock.release() |
|
1277 | 1298 | |
|
1278 | 1299 | if not partial: |
|
1279 | 1300 | repo.hook('update', parent1=xp1, parent2=xp2, error=stats[3]) |
|
1280 | 1301 | return stats |
|
1281 | 1302 | |
|
1282 | 1303 | def graft(repo, ctx, pctx, labels): |
|
1283 | 1304 | """Do a graft-like merge. |
|
1284 | 1305 | |
|
1285 | 1306 | This is a merge where the merge ancestor is chosen such that one |
|
1286 | 1307 | or more changesets are grafted onto the current changeset. In |
|
1287 | 1308 | addition to the merge, this fixes up the dirstate to include only |
|
1288 | 1309 | a single parent and tries to duplicate any renames/copies |
|
1289 | 1310 | appropriately. |
|
1290 | 1311 | |
|
1291 | 1312 | ctx - changeset to rebase |
|
1292 | 1313 | pctx - merge base, usually ctx.p1() |
|
1293 | 1314 | labels - merge labels eg ['local', 'graft'] |
|
1294 | 1315 | |
|
1295 | 1316 | """ |
|
1296 | 1317 | # If we're grafting a descendant onto an ancestor, be sure to pass |
|
1297 | 1318 | # mergeancestor=True to update. This does two things: 1) allows the merge if |
|
1298 | 1319 | # the destination is the same as the parent of the ctx (so we can use graft |
|
1299 | 1320 | # to copy commits), and 2) informs update that the incoming changes are |
|
1300 | 1321 | # newer than the destination so it doesn't prompt about "remote changed foo |
|
1301 | 1322 | # which local deleted". |
|
1302 | 1323 | mergeancestor = repo.changelog.isancestor(repo['.'].node(), ctx.node()) |
|
1303 | 1324 | |
|
1304 | 1325 | stats = update(repo, ctx.node(), True, True, False, pctx.node(), |
|
1305 | 1326 | mergeancestor=mergeancestor, labels=labels) |
|
1306 | 1327 | |
|
1307 | 1328 | # drop the second merge parent |
|
1308 | 1329 | repo.dirstate.beginparentchange() |
|
1309 | 1330 | repo.setparents(repo['.'].node(), nullid) |
|
1310 | 1331 | repo.dirstate.write(repo.currenttransaction()) |
|
1311 | 1332 | # fix up dirstate for copies and renames |
|
1312 | 1333 | copies.duplicatecopies(repo, ctx.rev(), pctx.rev()) |
|
1313 | 1334 | repo.dirstate.endparentchange() |
|
1314 | 1335 | return stats |
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